Work on 2 apps at the same time

I have a process that will have 2 different applications, I would like to be able to focus on the application I am going to work on and then focus on the next application.

Try Pick and branching to work simultaneously in both. or else you can check a condition, if that condition is met u can focus on one application once you have worked then go ahead and work on next. for the second one you can use a flag to check whether the first process is completed or not. I hope this helps you.